Adjustable bearing structure



July 24, 1928. h 1,577,937

' C. H. THORD ARSON ADJUSTABLE BEARING STRUCTURE Original Filed Feb. 27, 1925 r 1?? 72167? Uheszerfl27207flamaz Patented July 24,1928..-

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ADJUSTABLE BEARING s'rnuc'rvnn.

original application filed February 27,

The object of the present invention is to reduce a simple and novel self-aligning earingin a wall of a motor casing, or elsewhere, which shall consist of a few inexpen- .siveparts, easily assembled.

My invention is particularly to the armature bearings of small electric motors, but its usefulness isnot li'mitedto this particular field. In carrying 'out my loinvention, I provide a chamber formed between two concave elements secured together with their concave-sides facing each other; the bottoms of the concavities having reg; istering holes; and there being a tubular element extending across the chamber with the bore thereof registering with said holes; the ends of the tubular member bein fragments of a semi-spherical surface, w ereby said tubular member, which constitutes the bearing, ma rock in'a'nydirection and thus prevent bin ing of the same on a shaft-supported thereby. One of the concave elements;

may be'a part of the head of a motor casing, while the other may be a simple-sheet metal'memberfastened in any suitable way to the-head." v

The various features of novelty whereby w my invention is characterized will hereinafter be pointed out withparticularity in the claim; but, for \fgr a full understanding of my invention and of its objects and advantages, reference maybe had to the following detailed description taken in connection with the accompanying drawing, wherein:

. Figure 1 is a front elevation of a sheet metal head for a motor casing, having one of my improved bearings applied thereto;

.Fig. 2 is an edge view of the head; Fig. 3

is a section'on a large scale, on line 3-3 of Fig. 1; and Fig. 4 is an elevation, of the tubular bearing member.

Referring to shaped member having'concentric parts '5' and 6 eorrsponding and similar to the parts 2 and; 3, together with a central opening 7.

- applicable tube is placed in the tube will rock so as the draw1ng,-.1 represents a. wall which in the illustration is a sheet metseen,

1925, Serial 80. 12,045. Iliivided and this application filed March 7, 1927. Seriallio. 178,499.

This dish-shaped art hasa marginal flange 8 adapted to lie at against the wall. The flange has a plurality of fingers or prongs -9 projecting radially therefrom; three such prongs being shown. Thewall is perforated, as indicatedat 10, to'receive these fingers or prongs which, when bent over on the inside of the wall, secure the two members together. The bearin proper consists of a tube 11 having its ends rounded, as indicated at 12,

"to form parts of the same spherical surface.

The length of the tube, and its diameter, are so proportioned thatwhen-one end of the the socket '3,- before the dish.- shaped member or cap is fastened to-the wall, the opposite end of the tube will fit into the socket 6 when the cap is applied.

It will be seen that the tube cannot move bodily in a radial direction, but can oscillate in any direction about the center of the sphere of which its rounded ends form parts. Therefore when a shaft is insertedin the tube, ifthe long a is of the shaft and the corresponding an? of the tube should happen to be at as ig'ht angle to each other, to bring these axes together and'thus form a common axis for the bearing and the shaft. Thus the bearing becomes self-aligning but, after having aligned itself properly, it supports its end of the shaft in just the same way as though it were a rigidly held bearing. For the purpose of permitting the bearing to be lubricated, I provide the cap with an oil hole 13 at a point above the bearing sleeve'or tube, and provide extending through It will be seen length may be made by simply cutting ofi a piece Oftubing and rounding the ends; so that it is possible. to secure a lon bearing that is capable of rocking, ing an excess of metal. It will also'be. seen that since the bearing and its supporting means consist of only two simple parts, aside the top thereof.

from the main frame or wall, it is a very mexpensive construction; and, because the fastening of the parts into'their final positions is accomplished by the mere bendingover of :a few prongs, the work of assemblin is easy and the cost thereof small. It wilfbe tremely simple and inexpensive bearing thatbearings of any desired withou employ- 1n short, that I have produced an exthe latter with a port 14 a eificient and effective in performing the in-' tended functions of a bearing.

While I have illustrated and described with particularity only a single "preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which come within the definitions of my invention constituting the appended claim.

I claim:

In combination, a wall having a concave recess provided with a central opening, the material of the wall immediately surround ing said opening beingshaped to form a second smaller concave recess, a cap lying against said wall over said recesses, that porand a bearing sleeve arranged in the chamber between the cap and the Wall and resting at its ends in the central concave recesses,

said wall having holes therein in the vicinity "of the periphery of said cap, and there being prongs on said capextending through said holes and bent laterally against said wall.

cation.

CHESTER H. THORDARSON.

In testimony whereof, I sign this specifi- 

